16490903520 has 384 divisors, whose sum is σ = 64258596864. Its totient is φ = 3461750784.

The previous prime is 16490903509. The next prime is 16490903521. The reversal of 16490903520 is 2530909461.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490903521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9739794 + ... + 9741486.

It is an arithmetic number, because the mean of its divisors is an integer number (167340096).

Almost surely, 2^16490903520 is an apocalyptic number.

16490903520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16490903520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32129298432).

16490903520 is an abundant number, since it is smaller than the sum of its proper divisors (47767693344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16490903520 is a wasteful number, since it uses less digits than its factorization.

16490903520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 16490903520 in words is "sixteen billion, four hundred ninety million, nine hundred three thousand, five hundred twenty".